Fly-wheel jack.



D. STAGKHOUSE. I FLY WHEEL JACK. APPLICATION IILBD MAR. 26,- i913.

' 1,082,452; Patent ed Dc.2 3,-1913.

the invention consists in the construction,

1s a side elevation of the same. and Fig. 3 is wheel showing the mannerof using the jack STEPHEN D. STACKHOUSE, 0F GLENLYON, PENNSYLVANIA.

FLY-WHEEL JACK.

Specification of Letters Patent.

Patented Dec.23,1913.

Application filed. March 26, 1913. Serial No. 75am To all whom z'zfi'mayconcern:

Be it known that I, STEPHEN D. STACK i-ioosn, a citizen of the UnitedStates, residl ing at Glenlyon, in the county' of Luzerne and State ofPennsylvania, have invented new and useful Improvements in Fly-VVhcclJacks, of which the following is a specifical tion.

This invention relates to improvements in manually operated devices forrotating the fly wheels of engines. to throw the latter off dead centerand has particular application to what are commonly termed fly wheeljacks. v

In carrying out the present invention, it is my purpose to provide ajack of the class described whereby engine fiy wheels, driving I pulleysand the like may be thrown off dead center so as to facilitate thestarting of the l engine. It is also my purpose to provide a I fly wheeljack which will embrace the desired features of simplicity, etliciency.(lurability and convenience and which will be composed of few parts andthese so arranged and correlated as to reduce the possibility ofderangement to a minimum and further.- niore, my improved jack may befolded and stored in a comparatively small. space.

lVith the above and other objects in view,

combination and arrangement of parts hereinafter set forth in andfalling within the scope of the claim.

In the accompanying drawing; Figure 1 is a top plan view of a jackconstructed in accordance with my present invention. Fig.

a view in elevation of the jack and the tly to rotate the fly wheel.

Referring now to the accompanying drawing in detail the numeral 1designates a standard constructed in any suitable manner of any desiredor necessary dimensions, such stz'uidard having the upper end thereofpreferably forked or bifurcated as at 3 and the limbs of such bifurcatedportion formed with alining apertures designed to receive a pivot boltl. Pivotally mounted upon the bolt 4 between the limbs of the forkedextremity of the standard 1 is an operating lever having a short arm 5and a relatively long arm 6 whereby the power applied to the long armwill be multiplied when transl fly wheel at a point a mitted to theshort arm 5. Pivotally connected to the free end of the short arm of vbe disposed one above the other.

In the application of the jack to .a fly wheel, as shown in Fig 3, thegripping fingers 10, 10 are disposed upon the inner and outer walls ofthe rim of the wheel and the arm 6 of the operating lever moved in avertical direction so that the jaws 9, 9 will be disposed one above theother and grip the suitable distance below the fulcrum of the operatinglever whereby,

when the relatively long arm of the operating lever is pulleddownwardly, the jaws will effectively grip the rim of the wheel andimpart a rotary movement thereto so as to throw the wheel off of deadcenter. Should it be desired times, it will be seen that the long arm 6of the operating lever will be moved up and down several times therebythrowing the jaws downwardly and upwardly so that such jaws can grip thefly wheel at a lower point each time they move in a downward direction.

I claim A device of the class described comprising a standard, anoperating lever fulcrumed upon the upper extremity of said standard andhaving a short arm and a relatively long arm, a link pivoted at one end'to the free extremity of said short arm' and provided; with pivot pinsextending outwardly fi om one face thereof jaws mounted upon said pivotpins and having the front edges thereof beveled. and the opposite endsextended outwardly to form gripping fingers.

In testimony whereof I aflix my signature in presence of two witnesses.

STEPHEN D. STACKHOUSE.

lVitnesses:

RICHARD Room, EDWARD M. DAVIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

and spaced apart, and

